Properties of the Number 26866

Twenty-Six Thousand Eight Hundred Sixty-Six

Basics

Value: 26865 → 26866 → 26867

Parity: even

Prime: No

Previous Prime: 26863

Next Prime: 26879

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 7 × 19 × 101

Divisors: 1, 2, 7, 14, 19, 38, 101, 133, 202, 266

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100011110010

Octal: 64362

Duodecimal: 1366A

Hexadecimal: 68f2

Square: 721781956

Square Root: 163.90851106638726

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of integer compositions of n whose leaders of anti-runs are distinct. A374518

a(n) = 2^prime(n-1) mod prime(n)². A196202

Two-column table read by rows: Primitive distinct pairs that have the same value of φ, σ, and τ. A322688

Number of n X 6 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically. A207167

Number of 7 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically. A207175

Number of (n+2)X(2+2) 0..3 arrays with every 3X3 subblock row and column sum 1 3 6 or 8 and every diagonal and antidiagonal sum not 1 3 6 or 8. A252009

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (0, -1, 1), (0, 1, 0), (1, 0, 0), (1, 1, -1)}. A150182

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically. A207169

T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with every 3 X 3 subblock row and column sum 1 3 6 or 8 and every diagonal and antidiagonal sum not 1 3 6 or 8. A252015

a(n) = T(2n+1,n+2), T given by A026747. A26866